Fig. 2

Illustration of computation of the mutual information carried by LFP power about movie scenes. A Simulation of single-trial LFP power in the gamma band (from 70 to 80 Hz) using a sparsely connected recurrent network of excitatory and inhibitory neurons [40]. To simulate periods of low and high LFP power, which approximate the different movie scenes used in the original publication [40], we modulated the external input rate of the model by superposition of a sine wave with frequency 1 Hz and a constant rate signal. The spectrogram was computed over half a cycle of the sinusoid. Every time window of the spectrogram was considered a different scene \(s\) (\(s_{1}\) and \(s_{2}\) are a period of low and high LFP gamma power, respectively). Thus, the probability of each scene \(P\left( s \right)\) is the inverse of the number of time windows. B Probability distribution \(P\left( r \right)\) of the LFP gamma power across all trials and scenes. Probability distribution \(P\left( {r|s} \right)\) of the LFP gamma power across all trials given the presented scenes \(s_{1}\) (C) and \(s_{2}\) (D)